1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef SOFTBUS_SOCKET_H
17 #define SOFTBUS_SOCKET_H
18 
19 #include <sys/types.h>
20 #include <sys/uio.h>
21 
22 #include "softbus_adapter_socket.h"
23 #include "softbus_conn_interface.h"
24 #include "softbus_protocol_def.h"
25 
26 #ifdef __cplusplus
27 #if __cplusplus
28 extern "C" {
29 #endif
30 #endif
31 
32 #ifndef SOFTBUS_TEMP_FAILURE_RETRY
33 #define SOFTBUS_TEMP_FAILURE_RETRY(expression)              \
34     (__extension__({                                        \
35         long int __result;                                  \
36         do {                                                \
37             __result = (long int)(expression);              \
38         } while (__result == SOFTBUS_ADAPTER_SOCKET_EINTR); \
39         __result;                                           \
40     }))
41 #endif
42 
43 #define ADDR_FEATURE_IPV6           ':'
44 #define ADDR_SPLIT_IPV6             "%"
45 
46 enum SocketEvent {
47     SOFTBUS_SOCKET_OUT,       // writable
48     SOFTBUS_SOCKET_IN,        // readable
49     SOFTBUS_SOCKET_EXCEPTION, // exception
50 };
51 
52 typedef struct {
53     char addr[MAX_SOCKET_ADDR_LEN];
54     int32_t port;
55 } SocketAddr;
56 
57 typedef struct SocketInterface {
58     const char *name;
59     const ProtocolType type;
60     int32_t (*GetSockPort)(int32_t fd);
61     int32_t (*OpenServerSocket)(const LocalListenerInfo *option);
62     int32_t (*OpenClientSocket)(const ConnectOption *option, const char *bindAddr, bool isNonBlock);
63     int32_t (*AcceptClient)(int32_t fd, ConnectOption *clientAddr, int32_t *cfd);
64 } SocketInterface;
65 
66 int32_t ConnInitSockets(void);
67 void ConnDeinitSockets(void);
68 
69 const SocketInterface *GetSocketInterface(ProtocolType protocolType);
70 
71 int32_t RegistSocketProtocol(const SocketInterface *interface);
72 
73 int32_t ConnOpenClientSocket(const ConnectOption *option, const char *bindAddr, bool isNonBlock);
74 
75 ssize_t ConnSendSocketData(int32_t fd, const char *buf, size_t len, int32_t timeout);
76 ssize_t ConnRecvSocketData(int32_t fd, char *buf, size_t len, int32_t timeout);
77 void ConnCloseSocket(int32_t fd);
78 void ConnShutdownSocket(int32_t fd);
79 int32_t ConnSetTcpKeepalive(int32_t fd, int32_t seconds, int32_t keepAliveIntvl, int32_t keepAliveCount);
80 int32_t ConnSetTcpUserTimeOut(int32_t fd, uint32_t millSec);
81 
82 int32_t ConnToggleNonBlockMode(int32_t fd, bool isNonBlock);
83 int32_t ConnGetSocketError(int32_t fd);
84 int32_t ConnGetLocalSocketPort(int32_t fd);
85 int32_t ConnGetPeerSocketAddr(int32_t fd, SocketAddr *socketAddr);
86 
87 int32_t ConnPreAssignPort(int32_t domain);
88 int32_t GetDomainByAddr(const char *addr);
89 int32_t Ipv6AddrInToAddr(SoftBusSockAddrIn6 *addrIn6, char *addr, int32_t addrLen);
90 int32_t Ipv6AddrToAddrIn(SoftBusSockAddrIn6 *addrIn6, const char *ip, uint16_t port);
91 int32_t Ipv4AddrToAddrIn(SoftBusSockAddrIn *addrIn, const char *ip, uint16_t port);
92 
93 void BindToInterface(const char *myIp, int32_t domain, int fd, char *ifName, int32_t ifNameMaxLen);
94 
95 bool IsHmlIpAddr(const char *ip);
96 
97 #ifdef __cplusplus
98 #if __cplusplus
99 }
100 #endif /* __cplusplus */
101 #endif /* __cplusplus */
102 
103 #endif
104